The easiest way to install Clojure is to visit: https://clojure.org/guides/getting_started
Follow the instructions for your operation system
Download Intellji from: https://www.jetbrains.com/idea/download/
The Community version is free and suitable for Clojure development
When your editor loads you should see a welcome screen something like below
In order to do Clojure development we need a editor plugin called Cursive https://cursive-ide.com/
To install it press the ⚙️ Configure drop down and click Plugins
Select Marketplace and type "cursive" into the search field, then press the install button
Press "Create New Project" on the welcome screen we saw earlier then select Clojure from the left hand side and then "Deps" then press ok
Choose a project name
Welcome to your new project
Open the preferences for Intellji
Navigate through Editor > General > Smart Keys > Clojure
and change the "Structural editing style" to Parinfer Indent mode
Clojure parentheses will now balance according to their indentation level in the code
Right click your project and hover over the new menu and select "Clojure Namespace"
In the box that appears type
src/core that means create a folder called
src and create a file called
core inside the default extension for Clojure files are
Open the newly created file
and change the code to:
To create a REPL right click your project within the file explorer
Then click "Create 'REPL for ...'"
Right click the project again and press "Run 'REPL for ...'"
A new window will appear with the REPL inside
The REPL is an alive instance of Clojure that can be used to get quick feedback on your program
In order to do so we need to learn how to load code into it:
Load file into the REPL
Right click anywhere inside a open Clojure file and hover over REPL and select "Load file in REPL"
You should see something like
Change REPL namespace to our current namespace
Right click inside the Clojure file hover over REPL and press "Switch REPL NS to Current file"
That should provide output like
There's two ways we can send some code to the REPL, it can either be written directly in, then press enter with your cursor at the end of the line
or sent from the source code
The end result should be something like
at version of at least
Press shift twice and type "plugins"
Press the cog under plugins and click "Install Plugin from Disk..."
Select the LSP.zip in the file browser
Navigate to Languages & Frameworks > Language Server Protocol > Server Definitions
Change the select box to
Raw command add the following under Extension
cli;cljs;cljc;edn and command you will need to add
java -jar <path to lsp jar file>
Type the following expression into a Clojure file
You should see a red squiggly line underneath if everything has been successful
Navigate to https://leiningen.org/
Install it for your operating system
Leiningen will allow you to use many templates for Clojure